Biologic agents are substances derived from living organisms, such as bacteria, viruses, or proteins, that can be used for medical purposes. They are often employed in the treatment of diseases, including cancer and autoimmune disorders, by targeting specific pathways in the body. These agents can include monoclonal antibodies, vaccines, and gene therapies. In addition to their therapeutic uses, biologic agents can also pose risks as potential bioweapons. Certain pathogens, like anthrax or smallpox, can be weaponized and used to harm populations. Therefore, understanding biologic agents is crucial for both healthcare and security measures.